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Ownership Affidavit


Irrigation Systems




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New automatic ON-OFF time-controlled underground sprinkler systems and/or other irrigation systems controlled by automatic ON-OFF time-controlled devices shall comply with the following requirements:

  1. Timer devices shall be programmed to automatically operate and permit flow only during the days and hours permitted under the District’s Water Conservation Program. The automatic ON-OFF time-controlled irrigation system is to remain OFF during the period between the permissible irrigation days and times.
  2. The system shall be designed to restrict total system water use during the allowable ON irrigation periods to a water flow rate not to exceed ten (10) gallons per minute.
  3. Each irrigation system shall be equipped with devices to automatically turn the irrigation system OFF when it rains during the irrigation periods and when it has rained prior to the irrigation period and/or when the soil moisture conditions are adequate for plant growth without further addition of water.
  4. Sprinkler heads shall be placed so that the overlap areas under irrigation from adjacent sprinkler heads shall be minimal. Special sprinkler heads shall be used as necessary to preclude the application of water on paved areas or areas that do not require irrigation.
  5. A separate feed line with an approved AWWA locking ball valve with padlock wings, padlock holes and minimum 7/16” diameter will be installed on the main feed line to the irrigation system. District personnel shall have access at all times to the irrigation shut-off valve for the purpose of inspecting the system operation; to shut down the irrigation system in an emergency; when irrigation is taking place during non-irrigation periods and when excessive water has been used at the premises.
  6. A Backflow Prevention Device must be installed on the incoming service line where it first enters the building. The Backflow Prevention Device shall be manufactured by Febco, Watts or approved equal as listed in the most current issue of the Technical Reference, Item PWS 14 entitled, “Approved Backflow Prevention Assemblies” published by the New York State Health Department Center of Environmental Health. The device is to be installed in a safe and accessible location for inspection and testing.
  7. Prior to installation, a New York State Health Department application (DOH-347) shall be presented for approval by the District. After installation, the owner will be required to furnish a copy of the New York State Health Department form (DOH-1013) showing the device has been tested.
  8. The completed installation of the lawn sprinkler, backflow device and rain sensor must be inspected by the Westbury Water District.
  9. It is required by the Health Department that all backflow devices be tested annually and a copy of the test must be submitted to the Westbury Water District. The District office will send you a letter annually indicating that the device is due for this inspection. You will have 30 (thirty) days to have this test completed and submitted.



The owner must make an application to the Westbury Water District for approval of the new irrigation system. Data submitted with the application is to include:

  1. Sketch of the zone valve vault showing the arrangement of the pressure regulating valve and zone valve manifold.
  2. Provide a copy of a survey drawing of the premises showing the following:
  • Zones on plan (outline on lines below).
  • All piping by size and location.
  • Location of meter pits, taps to main and/or house plumbing system.
  • Location of backflow device, locking ball valve, pressure regulating valve and rain sensor.
  • Require owner’s licensed plumber to file with the Westbury Water District for installation of backflow prevention assembly on the water service to the premises per Westbury Water District standard requirements.

NOTE: No work is to be performed on installation of either the irrigation system or the Backflow Prevention Assembly until the plans for the irrigation system and the Health Department Application for the Backflow Prevention Assembly have been received and approved in writing by the Westbury Water District.

Please stop by the water district office to pick up an application.

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